The love of beauty in its multiple forms is the noblest gift of the human cerebrum.

Religion brings to man an inner strength, spiritual light, and ineffable peace.

All of us, at certain moments of our lives, need to take advice and to receive help from other people.

Those who desire to rise as high as our human condition allows, must renounce intellectual pride, the omnipotence of clear thinking, belief in the absolute power of logic.

A few observation and much reasoning lead to error; many observations and a little reasoning to truth.

Perhaps I will stay in Chicago and operate on human beings instead of on dogs. From a business standpoint, it would be excellent. But, as I hate medical practice, I would like better to make little money in doing scientific work than a great deal in doing surgical operations.

Life leaps like a geyser for those who drill through the rock of inertia.