] ] All that we have to do then is to act consistently with what we hold, and to value others if they act consistently with what they hold; that to be consistent constitutes sincerity;

] As a child I was taught what was right, but I was not taught to correct my temper. I was given good principles, but left to follow them in pride and conceit

If I understand you correctly, then possibly:
I am not romantic, you know, I never was. I ask only a comfortable home; and considering Mr. Collin's character, connections, and situation in life, I am convinced that my chance of happiness with him is as fair as most people can boast on entering the marriage state.

And maybe also:
Your plan is a good one, where nothing is in question but the desire of being well married; and if I were determined to get a rich husband, or any husband, I dare say I should adopt it.