There is nothing impossible to him who will try.
Never put off till tomorrow what may be done day after tomorrow just as well.
If you would win a man to your cause, first convince him that you are his sincere friend.
Take your inspiration from wherever you find it, no matter how ridiculous.
Dealing with backstabbers, there was one thing I learned. They're only powerful when you got your back turned.
How did I happen to become an explorer? It did not just happen, for my career has been a steady progress toward a definite goal since I was fifteen years of age.
Imperfection is beauty, madness is genius and it's better to be absolutely ridiculous than absolutely boring.
Just as you began to feel that you could make good use of time, there was no time left to you.
The manner in which one endures what must be endured is more important than the thing that must be endured.
I think women rule the world and that no man has ever done anything that a woman either hasn't allowed him to do or encouraged him to do.
A creative man is motivated by the desire to achieve, not by the desire to beat others.”
In this era in which we live, the old-fashioned virtues grow increasingly unpopular.
“Three failures denote uncommon strength. A weakling has not enough grit to fail thrice.”
If everything seems under control, you're just not going fast enough.
The point is not to pay back kindness but to pass it on.
Inspiration never arrived when you were searching for it.
There should be an international lunar base. That is certainly doable.
All unrest is but the struggle of the soul to reassure herself of her inborn immortality.
Prudence is the footprint of Wisdom.
To be ignorant of one's ignorance is the malady of the ignorant.
Make Things rather than Persons the subjects of conversations.
Nothing inspires forgiveness quite like revenge.
Good men do the most harm
To be able to look back upon one's past life with satisfaction is to live twice.
History is not a burden on the memory but an illumination of the soul.
“My bursting heart must find vent at my pen.”
“Ninety percent of baseball is mental, the other half is physical.”
What's in a name? That which we call a rose by any other name would smell as sweet.
The success of any great moral enterprise does not depend upon numbers.
We may be personally defeated, but our principles never.