The highest result of education is tolerance.

I know no study that will take you nearer the way to happiness than the study of nature - and I include in the study of nature not only things and their forces, but also mankind and their ways, and the moulding of the affections and the will into an earnest desire not only to be happy, but to create happiness.

There is joy in self-forgetfulness. So I try to make the light in others' eyes my sun, the music in others' ears my symphony, the smile on others' lips my happiness.

We betray ourselves into smallness when we think the little choices of each day are trivial.

Security is mostly a superstition. It does not exist in nature.

Things must be felt with the heart.

Serious harm, I am afraid, has been wrought to our generation by fostering the idea that they would live secure in a permanent order of things.