Ethos.
As in appeal to ethics. It can't be logos because that is for logic and the other because those are literary devices, not appeals.
President Kennedy makes intensive use of parallelism and antithesis for the sake of persuasion and to make his speech more appealing to the audience. Antithesis is a rhetorical device which is used to contrast two ideas or things in a parallel sentence. Parallel structure is a literary device which consist of a repetition of some pattern of words. These stylistic devices offer the reader a more pleasant speech as well as it makes the speech easy to understand the main idea of the thought.
Example: "Let us never negotiate out of fear, but let us never fear to negotiate."
E<u>ssay on diginity of labour </u>
We humans need to work somewhere in order to survive or fulfil the basic needs of food, clothes and shelter. In India, the population of labour is very high as they are available at very cheap rate as compared to other countries. They work so hard to earn their living but still, they face so many problems in work as they are paid very less.
Their demand is very high but still don't get that much respect in any nation and are always exploited. They are far away from many of the facilities. Their dignity is always a question mark. It is very important for everyone to realise their value as they are very helpful for us. They must be respected by everyone. In schools, colleges and in workplaces, a sense of dignity of the labours must be conveyed to all of the students / employees.
There is this thing called google that u can use for that cause I found it on google in 2 seconds