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“Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.”
― Karl Popper

“When you arise in the morning think of what a privilege it is to be alive, to think, to enjoy, to love ...”
― Marcus Aurelius, Meditations

“If you are distressed by anything external, the pain is not due to the thing itself, but to your estimate of it; and this you have the power to revoke at any moment.”
― Marcus Aurelius, Meditations

“The greater the difficulty, the more glory in surmounting it. Skillful pilots gain their reputation from storms and tempests. ”
― Epictetus