The improver of natural knowledge absolutely refuses to acknowledge authority, as such. For him, skepticism is the highest of duties; blind faith the one unpardonable sin.

If a little knowledge is dangerous, where is the man who has so much as to be out of danger?

The medieval university looked backwards; it professed to be a storehouse of old knowledge. The modern university looks forward, and is a factory of new knowledge.

Time, whose tooth gnaws away everything else, is powerless against truth.

It is not who is right, but what is right, that is of importance.

The only medicine for suffering, crime, and all other woes of mankind, is wisdom. Teach a man to read and write, and you have put into his hands the great keys of the wisdom box. But it is quite another thing to open the box.

In science, as in art, and, as I believe, in every other sphere of human activity, there may be wisdom in a multitude of counsellors, but it is only in one or two of them.

There is no sea more dangerous than the ocean of practical politics none in which there is more need of good pilotage and of a single, unfaltering purpose when the waves rise high.

Logical consequences are the scarecrows of fools and the beacons of wise men.

Learn what is true in order to do what is right.

Try to learn something about everything and everything about something.

The scientific imagination always restrains itself within the limits of probability.

I make negative music, but I also make positive music because that's what thrown at me with life.

I try to be cool with everybody, but sometimes, everybody just has different personalities, motives, and different characters.

Fame is a thing that happens when you do something you love - nobody wants to be famous for the wrong reasons. It's not my goal, but if being more famous means I can get more music out, that's cool.

Success is not the key to happiness. Happiness is the key to success. If you love what you do, you'll be successful.

As long as you know yourself and you got good people around you and you passionate about what you do, that's all that matters because at the end of the day, you go to sleep with the people you love, you wake up with the people you love, and you spend your time with the people you love.

God puts us in places. It's for you to make the decision whether you go left or right.

Tattoos, for me, are like a timeline of my life. I could look at a certain tattoo, and it reminds of me of a certain time in my life and why I got that tattoo.

I've always been into dressing and being stylish because I feel like that's where I gained a lot of my confidence and swag as a rapper, so fashion goes hand-in-hand with music to me.

When I go home and get off tour, I'd like to have a peace of mind. I like to chill. I don't like everything to be all chaotic like how it is when I step outside, you know?

I want to make people feel certain ways when they listen to my music. Whether it's partying or going through relationship problems or grinding or getting dressed and feeling fly. I want to be who I am and have emotion in my music that affects people.

To say nothing, especially when speaking, is half the art of diplomacy.

Every science begins as philosophy and ends as art.

In my youth I stressed freedom, and in my old age I stress order. I have made the great discovery that liberty is a product of order.

The family is the nucleus of civilization.

Education is a progressive discovery of our own ignorance.

Sixty years ago I knew everything; now I know nothing; education is a progressive discovery of our own ignorance.

Education is the transmission of civilization.

The love we have in our youth is superficial compared to the love that an old man has for his old wife.

Science gives us knowledge, but only philosophy can give us wisdom.

Every form of government tends to perish by excess of its basic principle.

Most of us spend too much time on the last twenty-four hours and too little on the last six thousand years.

Bankers know that history is inflationary and that money is the last thing a wise man will hoard.

Nature has never read the Declaration of Independence. It continues to make us unequal.

Our knowledge is a receding mirage in an expanding desert of ignorance.

Tired mothers find that spanking takes less time than reasoning and penetrates sooner to the seat of the memory.

The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds.

Moral codes adjust themselves to environmental conditions.

There are three musts that hold us back: I must do well. You must treat me well. And the world must be easy.

For that again, is what all manner of religion essentially is: childish dependency.

The art of love is largely the art of persistence.

I hope to die in the saddle seat.

People could rationally decide that prolonged relationships take up too much time and effort and that they'd much rather do other kinds of things. But most people are afraid of rejection.

The best years of your life are the ones in which you decide your problems are your own. You do not blame them on your mother, the ecology, or the president. You realize that you control your own destiny.

I think the future of psychotherapy and psychology is in the school system. We need to teach every child how to rarely seriously disturb himself or herself and how to overcome disturbance when it occurs.

There's no evidence whatsoever that men are more rational than women. Both sexes seem to be equally irrational.

You do the right thing even if it makes you feel bad. The purpose of life is not to be happy but to be worthy of happiness.

Taught from infancy that beauty is woman's sceptre, the mind shapes itself to the body, and roaming round its gilt cage, only seeks to adorn its prison.

Women are degraded by the propensity to enjoy the present moment, and, at last, despise the freedom which they have not sufficient virtue to struggle to attain.