You never know what life is like, until you have lived it.

Life can be wonderful if you're not afraid of it. All it takes is courage, imagination ... and a little dough

The natural world is the greatest source of excitement. The greatest source of visual beauty. It is the greatest source of so much in life that makes life worth living.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

During your life, never stop dreaming. No one can take away your dreams

Don't be concerned others not appreciating you. Be concerned about your not appreciating others.

When one has not had a good father, one must create one.

Insanity in individuals is rare - but in groups, parties, nations, and epochs, it is the rule.

To forgive is not just to be altruistic.

I always like to look on the optimistic side of life, but I am realistic enough to know that life is a complex matter.

Should you find yourself in a chronically leaking boat, energy devoted to changing vessels is likely to be more productive than energy devoted to patching leaks.

All that happens means something; nothing you do is ever insignificant.

If we couldn't laugh we would all go insane.

You only live once, but if you do it right, once is enough.

Where there is love there is life.

The most important thing to do if you find yourself in a hole is to stop digging.

Old minds are like old horses; you must exercise them if you wish to keep them in working order.

The desire to fly is an idea handed down to us by our ancestors who... looked enviously on the birds soaring freely through space... on the infinite highway of the air

Life will not break your heart. It'll crush it.

Any place I hang my head is home.

The worldly comforts are not for me. I am like a traveller, who takes rest under a tree in the shade and then goes on his way.