It is easier to influence strong than weak characters in life.

If a man neglects education, he walks lame to the end of his life

I have no idea what's awaiting me, or what will happen when this all ends. For the moment I know this: there are sick people and they need curing.

Nature is not human-hearted.

Live for yourself and you will live in vain;Live for others, and you will live again.

The essence of life is statistical improbability on a colossal scale.

Love is like an hourglass, with the heart filling up as the brain empties

I am an American; free born and free bred, where I acknowledge no man as my superior, except for his own worth, or as my inferior, except for his own demerit.

You never know when a moment and afew sincere words can have an impact on a life.

To forgive is not just to be altruistic.

When we do the best that we can, we never know what miracle is wrought in our life, or in the life of another.

The past is the best prophet of the future.

The natural world is the greatest source of excitement. The greatest source of visual beauty. It is the greatest source of so much in life that makes life worth living.

Each man should frame life so that at some future hour fact and his dreaming meet.

Live your life and forget your age.

I'm not sure I'm adult yet.

The earth is like a spaceship that didn't come with an operating manual.

Even truth needs to be clad in new garments if it is to appeal to a new age.

There is no worse bitterness than to reach the end of your life and realized you have not lived.

Any place I hang my head is home.

I restore myself when I'm alone.