My politics were those of prophylaxis, my opponents preferred those of palliation.
Brevity in writing is the best insurance for its perusal.
Belief begins where science leaves off and ends where science begins.
If we would serve science, we must extend her limits, not only as far as our own knowledge is concerned, but in the estimation of others.
Life itself is but the expression of a sum of phenomena, each of which follows the ordinary physical and chemical laws.
The task of science, therefore, is not to attack the objects of faith, but to establish the limits beyond which knowledge cannot go and found a unified self-consciousness within these limits.