A process which led from the amoeba to man appeared to the philosophers to be obviously a progress though whether the amoeba would agree with this opinion is not known.

Of all forms of caution, caution in love is perhaps the most fatal to true happiness.

Suppose atomic bombs had reduced the population of the world to one brother and sister; should they let the human race die out?

All that passes for knowledge can be arranged in a hierarchy of degrees of certainty, with arithmetic and the facts of perception at the top.

The axiomatic method has many advantages over honest work.

Even when the experts all agree, they may well be mistaken.

If the Church is not now as bad as the Soviet Government, that is due to the influence of those who attacked the Church