One is apt to overestimate beauty when it is rare.

Things of the first importance are few; let appreciation be rare.

What I cannot love, I overlook.

... we
do not admire what
we cannot understand.

There are few men under heaven who can love and see the defects, or hate and see the excellence of an object.

When they become so derivative as to become unintelligible,
the same thing may be said for all of us, that we do not admire what we cannot understand.

Je connais peu les femmes; mais il me semble qu'il est difficile qu'on admire ce qu'on ne comprend pas

Whoever extolls him as a God of love, does not think highly enough of love itself.

Too few see the beauty obvious to all who are near.

It is very seldom that a person loves anyone they cannot in some way envy.

Those of our pleasures which come most rarely give the greatest delight.

The good we never miss we rarely prize

It is not customary to love what one has

[I]t is that we are too apt to despise what appears to be neither good nor beautiful, and thus we lose what is helpful and salutary.