Hard work, disciplined habits, modesty in living, contentment and cheerfulness.
Today, more than ever before, life must be characterized by a sense of Universal responsibility, not only nation to nation and human to human, but also human to other forms of life.
History is the devil's scripture.
I restore myself when I'm alone.
We cannot live better than in seeking to become better.
It is only because of problems that we grow mentally and spiritually.
The lessons of the past are ignored and obliterated in a contemporary antagonism known as the generation gap.
Old age, especially an honoured old age, has so great authority, that this is of more value than all the pleasures of youth.
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 love of life is necessary to the vigorous prosecution of any undertaking.
There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
It takes a long time to grow young.
Life is full of misery, loneliness, and suffering - and it's all over much too soon.
We're born alone, we live alone, we die alone. Only through our love and friendship can we create the illusion for the moment that we're not alone.
One man with a gun can control 100 without one.
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 happiest is the person who suffers the least pain; the most miserable who enjoys the least pleasure.
We think too much and feel too little.
The essence of life is statistical improbability on a colossal scale.
We all owe death a life.
We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to be created at once by special act.