Imagination without deep and full knowledge is a snare.

Expert knowledge is limited knowledge.

Knowledge is a tangible asset, quite often the most important tool in your work.

I only hope that when I am free, as they are free to go in quest, of the knowledge beyond the bounds of life, it may not seem better to me to rest.

The only good is knowledge and the only evil is ignorance.

The limit of man's knowledge in any subject possesses a high interest which is perhaps increased by its close neighbourhood to the realms of imagination.