How different when using, is or was?

Question

She donated all her money to others. I think she was a true example of noblesse oblige

I think i can use is instead of was.. There is any meaning difference between two?

Answer 1

• I think she was a true example of noblesse oblige

This sentence denotes past tense. This indicates that you are describing something about her that was in the past. Probably she is not alive anymore.

• I think she is a true example of noblesse oblige

This sentence denotes present tense. This indicates that you are describing something is still here. Like she is alive and such.

Answer 2

She donated all her money to others. I think she was a true example of noblesse oblige.

I'm not sure that this is a correct usage of noblesse oblige but ignoring that, I would expect:

Present: She donates all her money to others. I think she is a true example ...

Past: She donated all her money to others. I think she was a true example ...

Answer 3

The tense are just different:

• She was in the past (for example last year), but no longer today:

Past: I think she was a true example of noblesse.

• She is still today:

Present: I think she is a true example of noblesse.