A font also refers to a 'baptismal font' or the font of an oil lamp which holds the oil. In referring to a 'font of knowledge' I envision a large pool (of knowledge) from which one can draw greater understanding from, like the act of baptism or lighting a lamp.
I can't envision a situation where I'd ever need to use the word envision in a sentence. Try to envision a better future for our children.
To envision something is to see it in your mind.
Envision America was created in 2006.
Envision - song - was created in 2002.
Envision Schools was created in 2002.
EnVision EvAngelene was created in 1995.
Envision Financial was created in 1946.
Envision Financial's population is 1,400.
Envision Solar was created in 2006.
"I envision a world where violence is not an issue.
No, but unless you envision a life changing oil and brake shoes as high billing, then consider completing your education.