To be nobody-but-yourself - in a world which is doing its best, night and day, to make you somebody else - means to fight the hardest battle which any human being can fight; and never stop fighting.
Your living is determined not so much by what life brings to you as by the attitude you bring to life; not so much by what happens to you as by the way your mind looks at what happens.
We must believe in ourselves or no one else will believe in us; we must match our aspirations with the competence, courage and determination to succeed.
Your most precious, valued possessions and your greatest powers are invisible and intangible. No one can take them. You, and you alone, can give them. You will receive abundance for your giving.
Happiness belongs to those who are sufficient unto themselves. For all external sources of happiness and pleasure are, by their very nature, highly uncertain, precarious, ephemeral and subject to chance.
Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young."
You really have Social Disease when you make all your play work. The only reason to play hard is to work hard, not the other way around like most people think.
Once one is caught up into the material world not one person in ten thousand finds the time to form literary taste, to examine the validity of philosophic concepts for himself, or to form what, for lack of a better phrase, I might call the wise and tragic sense of life.