Old minds are like old horses; you must exercise them if you wish to keep them in working order.
All good things which exist are the fruits of originality.
Life is not an exact science, it is an art.
Life is not divided into semesters. You don't get summers off and very few employers are interested in helping you find yourself.
Some days you're the bug, some days you're the windshield.
The happiest is the person who suffers the least pain; the most miserable who enjoys the least pleasure.
It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is the most adaptable to change.
In the depth of winter, I finally learned that within me there lay an invincible summer.
Your purpose in life is to find your purpose and give your whole heart and soul to it.
The pleasure of the moment begins to wither almost as soon as it blossoms; our pleasures are soon swallowed up in time's relentless torrent.
Rudeness is the weak man's imitation of strength.
Courage is a kind of salvation.
Life always waits for some crisis to occur before revealing itself at its most brilliant.
The doctor of the future will give no medicine, but will interest her or his patients in the care of the human frame, in a proper diet, and in the cause and prevention of disease.
It's only terrible to have nothing to wait for.
I never think of the future - it comes soon enough.
Im not in this world to live up to your expectations and youre not in this world to live up to mine.
Humility is really important because it keeps you fresh and new.
Never throughout history has a man who lived a life of ease left a name worth remembering.
To protect our freedoms, it seems we're going to have to relinquish some of our freedoms for a short period of time.
How people treat you is their karma; how you react is yours.