I can only note that the past is beautiful because one never realises an emotion at the time. It expands later and thus we don't have complete emotions about the present only about the past.

The violent reaction on the recent development of modern physics can only be understood when one realises that here the foundations of physics have started moving and that this motion has caused the feeling that the ground would be cut from science.

That's one of the great things about poetry one realises that one does one's little turn - that you're just part of the great crop as it were.