But logic is not all, one needs one's heart to follow an idea.

It is necessary for the very existence of science that minds exist which do not allow that nature must satisfy some preconceived conditions.

Scientists are explorers. Philosophers are tourists.

I would rather have questions that can't be answered than answers that can't be questioned.

Phenomena complex-laws simple....Know what to leave out.

It appears that there are enormous differences of opinion as to the probability of a failure with loss of vehicle and of human life. The estimates range from roughly 1 in 100 to 1 in 100,000. The higher figures come from the working engineers, and the very low figures from management.

What is necessary for 'the very existence of science,' and what the characteristics of nature are, are not to be determined by pompous preconditions, they are determined always by the material with which we work, by nature herself. We look, and we see what we find, and we cannot say ahead of time successfully what it is going to look like. ... It is necessary for the very existence of science that minds exist which do not allow that nature must satisfy some preconceived conditions.