How lucky I am to have something that makes saying goodbye so hard.

Authority, without any condition and reservation, belongs to the nation.

All is mine but nothing owned, nothing owned for memory, and mine only while I look.

There is no limit to the amount of good you can do if you don't care who gets the credit.

Science is not only compatible with spirituality; it is a profound source of spirituality.

The day of individual happiness has passed

Being unwanted, unloved, uncared for, forgotten by everybody, I think that is a much greater hunger, a much greater poverty than the person who has nothing to eat.

The mind that finds its way to wild places is the poet's; but the mind that never finds its way back is the lunatic's.

Computers are useless. They can only give you answers.

You always admire what you really don't understand.

Christmas to a child is the first terrible proof that to travel hopefully is better than to arrive.

All honor's wounds are self-inflicted.

I want to sing like the birds sing, not worrying about who hears or what they think.

Before I speak, I have something important to say.

Tomorrow is the most important thing in life. Comes into us at midnight very clean. It's perfect when it arrives and it puts itself in our hands. It hopes we've learned something from yesterday.

A scientific man ought to have no wishes, no affections, - a mere heart of stone.

I will indulge my sorrows, and give way to all the pangs and fury of despair.

Three may keep a secret, if two of them are dead.

Enthusiasm... the sustaining power of all great action.

The Declaration of Independence I always considered as a theatrical show. Jefferson ran away with all the stage effect of that... and all the glory of it.

There are no facts, only interpretations.