http://www.ldoceonline.com/dictionary/can In the above link, I found this usage of "can".
The word "can" may be used with the verbs ‘see’, ‘hear’, ‘feel’, ‘taste’, and ‘smell’, and with verbs connected with thinking, to mean that someone sees something, hears something etc-
If so, "Are the following sentences natural? "
She is so beautiful that everyone can love her.
She is so foolish that she can believe what he says.