The earth is like a spaceship that didn't come with an operating manual.
Sometimes - history needs a push.
The only creatures that are evolved enough to convey pure love are dogs and infants.
All my life through, the new sights of nature made me rejoice like a child.
My reading of history convinces me that most bad government results from too much government.
To do a great right do a little wrong.
The more man meditates upon good thoughts, the better will be his world and the world at large.
If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
Science is the most reliable guide for civilization, for life, for success in the world. Searching a guide other than the science is meaning carelessness, ignorance and heresy.
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.
Without a measureless and perpetual uncertainty, the drama of human life would be destroyed.
If you break your neck, if you have nothing to eat, if your house is on fire, then you got a problem. Everything else is inconvenience.
To one extent, if you've seen one city slum, you've seen them all.
Life is a succession of lessons which must be lived to be understood.
Don't let making a living prevent you from making a life.
Life always waits for some crisis to occur before revealing itself at its most brilliant.
A hospital bed is a parked taxi with the meter running.
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.
The man who has no sense of history, is like a man who has no ears or eyes
Where there is love there is life.
Live simply so others may simply live.