Our life is what our thoughts make it.
The secret of genius is to carry the spirit of the child into old age, which means never losing your enthusiasm.
You'll never do a whole lot unless you're brave enough to try.
Others have seen what is and asked why. I have seen what could be and asked why not.
Weakness of attitude becomes weakness of character.
Isn't it astonishing that all these secrets have been preserved for so many years just so we could discover them!
Our patience will achieve more than our force.
Only those are fit to live who do not fear to die; and none are fit to die who have shrunk from the joy of life and the duty of life. Both life and death are parts of the same Great Adventure.
The way to become rich is to put all your eggs in one basket and then watch that basket.
A bird doesn't sing because it has an answer, it sings because it has a song.
Life is entrusted to man as a treasure which must not be squandered, as a talent which must be used well.
Our lives begin to end the day we become silent about things that matter.
If we want a free and peaceful world, if we want to make the deserts bloom and man grow to greater dignity as a human being-we can do it.
A superior man is modest in his speech, but exceeds in his actions.
Question with boldness even the existence of God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear.
I discover myself on the verge of a usual mistake.
Improvement makes strait roads, but the crooked roads without Improvement, are roads of Genius.
Perseverance is failing 19 times and succeeding the 20th.
Great work requires great and persistent effort for a long time. … Character has to be established through a thousand stumbles.
If you don't like something, change it. If you can't change it, change your attitude. Don't complain.
After climbing a great hill, one only finds that there are many more hills to climb.