Knowing things is magical, if other people don’t know them.
Knowing serves no real purpose, but then, neither does not knowing.
It was the greatest sensation of existence: not to trust but to know.
It strikes me that all our knowledge about the structure of our earth is very much like what an old hen would know of a hundred acre field, in a corner of which she is scratching.
It is therefore worthwhile, to search out the bounds between opinion and knowledge, and examine by what measures, in things whereof we have no certain knowledge, we ought to regulate our assent, and moderate our persuasions.
It is only when we forget all our learning that we begin to know.
It is not enough to know, we must also apply; it is not enough to will, we must also do.
It is ambition enough to be employed as an under-labourer in clearing the ground a little, and removing some of the rubbish that lies in the way to knowledge.
It is a very sad thing that nowadays there is so little useless information.
Is there any knowledge in the world which is so certain that no reasonable man could doubt it?
Is Knowledge knowable? If not, how do we know?
In the world we live in, what we know and what we don’t know are like Siamese twins, inseparable, existing in a state of confusion.