After my spectacular failures, I could not be satisfied with an ordinary success.

I have never found a companion that was so companionable as solitude. We are for the most part more lonely when we go abroad among men than when we stay in our chambers. A man thinking or working is always alone, let him be where he will.

Today is life-the only life you are sure of. Make the most of today. Get interested in something. Shake yourself awake. Develop a hobby. Let the winds of enthusiasm sweep through you. Live today with gusto.

I know that I am intelligent, because I know that I know nothing.

Nothing gives rest but the sincere search for truth.

Never let your schooling interfere with your education.