An obstacle is not a discouragement. It may become one, but only with our own consent. So long as we refuse to be discouraged, we cannot be discouraged.

Physical suffering apart, not a single sorrow exists that can touch us except through our thoughts.

At every crossroads on the path that leads to the future, tradition has placed 10,000 men to guard the past.

An obstacle is not a discouragement. It may become one, but only with our own consent. So long as we refuse to be discouraged, we cannot be discouraged.

At every crossroad on the way that leads to the future, each progressive spirit is opposed by a thousand men appointed to guard the past.

All our knowledge merely helps us to die a more painful death than the animals that know nothing. A day will come when science will turn upon its error and no longer hesitate to shorten our woes. A day will come when it will dare and act with certainty; when life, grown wiser, will depart silently at its hour, knowing that it has reached its term.

Our reason may prove what it will: our reason is only a feeble ray that has issued from Nature.